Amanda (far right) in her breakout role in 2004's Mean Girls.

In honor of Amanda Seyfried's second Teen Vogue cover, see how her style has evolved through the years from fresh-faced teen actor to grown-up leading lady!

,

At the 55th Annual Ace Eddie Awards in 2005.

,

Attending the series premiere of Thief in 2006.

,

In 2007, wearing a Dior sundress.

,

Amanda sports jeans while out and about in Berlin 2008.

,

Amanda solidifies her star status in 2008's Mamma Mia!

,

Wearing a Herve L. Leroux dress in Athens, June 2008.

,

June 2008, wearing Miu Miu at the London premiere of Mamma Mia!

Amanda Seyfried attends the world premiere of "Mamma Mia!" the Movie at the Odeon Leicester Square on June 30, 2008 in London."Mamma Mia!" London Premiere - Outside Arrivals.Odeon Leicester Square.London, United Kingdom.June 30, 2008.Photo by Mike Marsland/WireImage.com..To license this image (55235036), contact WireImage.com

,

At the NYC Mamma Mia! premiere, July 2008.

,

Amanda in the August 2008 issue of Teen Vogue.

,

At the 2008 Emmy Awards HBO after-party.

Actress Amanda Seyfried arrives at HBO's Emmy Awards after party at The Plaza at the Pacific Design Center September 21, 2008 in West Hollywood, California..HBO's Emmy Awards After Party - Arrivals.The Plaza at the Pacific Design Center.Hollywood, CA United States.September 21, 2008.Photo by Mark Sullivan/WireImage.com..To license this image (55804859), contact WireImage.com